Pneumatic and cushion tire



G. W. OKEY.

PNEUMATIC AND CUSHION TIRE.

APPLICATION FILED MAR. 20, 1920.

PatentedSept. 6, 1921.

2 SHEETS-SHEET I.

G. W. OKEY.

PNEUMATIC AND CUSHION TIRE.

APPLICATION FILED MAR. 20, I920.

Patented Sept. 6, 1921.,

2 SHEETS-SHEET 2.

Silfitii rre,

PNEUMATICI AND CUSHION TIRE.

Specification of Letters Patent.

Application filed March 2G, 1920. Serial No. 367,379.

To all whom it may concern:

Be it known that I, GEORGE lN. Girar, a citizen of the United States ofAmerica, and resident of Des Moines, Polk county, iowa, have invented anew and useful Pneumatic and Cushion Tire, of which the 'following is aspecication.

The object of this invention isV to provide an improved construction forvehicle tires embodying the characteristics of pneumatic and cushionstructures. Y

A further object of this invention is to provide improved means formounting and retaining separate tire members on a wheel.

A further object of this invention is to provide improved means forcombining a cushion or solid tire with a pneumatic tire, the latterbeing radially within the former but not substantially embraced thereby.

My invention consists in the construction, arrangement and combinationof elements hereinafter set forth, pointed out in my claims andillustrated by the accompanying drawing, in which- Figure 1 is anelevation of one type ofv wheel showing my improved tire mounted thereonas required for practical use. Fig. 2 isa cross-section on the indicatedline 2 2 of Fig. 1. Fig. 8 is an elevation of a bolt and one nutdetached therefrom. Fig. 4 is an elevation of another type of wheelshowing my improved tire mounted thereon as required for practical use.Fig. 5 is a cross-section on the indicated line 5-5 of Fig. 4, on anenlarged scale. y Fig. 6 is a detail side elevation of a portion of thedevices shown in Figs. 4 and 5, on an enlarged scale. n y

In the construction of my improved devices as shown in Figs. 1` 2 and 3,a novel rim is mounted on a felly 10 carried by spokes 21, and said rimis composed of two members 11, 12. rllhe member 11 of the rim comprisesa base portion adapted to be secured on the periphery of thefelly and aflange 11a integral with one side margin thereof and extending outwardlytherefrom. The flange 11a is formed with a bead 11b and said flange andbead together constitute the tire-retaining portion of the rim locatednearest to the body of the vehicle when in use. The member 12 of the rimcomprises a base portion overlapping the radially inner face of thefiangeless marginal portion of the rim member 11 and detachably securedthereto by bolts 13, preferably having their heads countersunk in themember 11 and having their nutsl on the outer face of the portion 12;and also a flange portion 12 integral with one side margin of the baseportion and extending outwardly therefrom. The flange 12a is formed witha bead 12b opposite to the-bead 11b and said flange and bead togetherconstitute the tire-retaining portion of the rim located on the outsideor farthest from the body Vof the vehicle when in use. Hence the portion11 and its flange may be termed the permanent portion of the rim, whilethe portion 12 and its flange' may be termed the removable ordemountable portion of the rim. The base and flange portions of the rimmembers preferably 0in on transversely curved lines so as to presenttransversely-curved faces for'contact with a pneumatic tire member andprevent or avoid pinching and consequent wear thereof. A pneumatic tiremember 14, having the characteristics of an inner tube now common andwell known and provided `with a tire valve` 15 of'common form, ismounted on the rim and is confined laterallyy by the flanges thereof.The pneumatic tire 14 preferably is mounted on the rim in deflated ornearlydeflated condition. A tire member 16 having solid or cushioncharacteristics, is mounted on the permanent member of the rim while thedemountable member is separated therefrom, and said tire member 16 isformed with a concaved inner face adapted to bear against the tiremember 14 when the latter is inflated for use. rEhe tire member 16 isretained on the permanent member of the rim by embracing relation of thedevmountable member when the latter is mounted as shown and the flanges11a and 12a of said rim members are of such width as to overlapsubstantial distances on the sides of the tire member, the beads 11b and12b of the Hannes contacting vwith and embedding in the sides of thetire member. The tire member 16 and the beads of the flanges are formedwith registering holes, the holes Patented sept. e, mai.4

are removed, by firm or permanent setting' of the'V nuts against theflange bead 11?; and the tire members may be removed and replaced byremoval and replacement of the demountable portion or member of the rimmadeA possible by removable and replaceable characteristics inherent inthe outermosty nuts 16. The tire member 16 preferably is provided withcircumferentially arranged 2 0 and embedded wires 19 in' marginalportions thereof on opposite sides of the transverse bolt holes therein,which Wiresreinforce the substance'of said tire member. 17 preferably isformed with a relatively Vlong notch 20 between its ends and on theradially outer portion thereof when mounted for use; the concavedshoulders acting in connection with the beads and nuts preventingrotation of the bolts relative to the tire and rim when in use. Thenotches 2O in the v bolts 17 provide means for compression of portionsof the tire member 16 into said notches because of the diameter of thebolt holes, thus giving cushion characteristics to said tire. Y

In Ypractical use, the tire memberrl Vis inflated as shown and forms acushion for the tire member 16, particularly those portions of the tiremember 16 between the bolts and slightly less in respect to the portionsof theV tire member 16 traversed by the bolts.

Infthe construction according to Figs. 1, 5 and 6 the felly 10 andspokes 21 are replaced by a plate or disk 22, the wheel in this instancebeing of the so-called disk type. A permanent rim member 11"' isprovided, and is. of substantially of the same shape as the rim member11 previously described, be-

ing formed at one margin with an integral flange 11d having a bead 11ethereon. The flangeless marginal portion of the rim mem ber 11c issecured rigidly to the peripheral portion .of the disk or plate 22;being either Y integrally formed on said disk or plate, or

separately yformed and permanently secured thereto as by rivets 25.V Aremovable or demountable rim member 12c isV provided, and is formed withan integral flange 12d parallel with and spaced from the flange 11d, andwith a flange 12 overlapping the outer surface of the peripheral portionof the disk or plate 22 and removably secured thereto by means of aseries of bolts 23, having their heads contacting with the in- Eachbolty somewhat similar to that previously de-V Y scribed in connectionwith Figs. 1, 2.1and 3.

In this construction the bolts 17 are omittedV and dependence is placedupon the gripping and embracing functions of the flanges 11 and 12d toretain the tires in place, lsuch function being assisted by the beads11e and 12f which are seated in lateral grooves of the tire member 16.To prevent creeping of the tire members circumferentially of the rim,the flanges 11 and 12d preferably are formed with bosses 24: spacedapart in the beads 11e and 12f and extending inwardly toward the medianline of the tire member 16 a suitable distance from thevbottoms or saidbeads.

VI claim as my invention- 1. The combination of a rim made with ademountable member and a solid or cushion tire of resilient type mountedtherein, there being registering holes-in said rim and tire, of boltsmounted 4'in the holes in the tire and rim, which bolt-s are formed withnotches between their ends whereby portions of said tire may becompressed into said notches.

2. The combination with a wheel having a felly, of a rim formed in twomembers, one member of the rim extending across and fixed to the fellyand having a peripheral flange integral with one margin and laterallyspaced from the felly, the other member of the rim overlapping onl thefirst member` and detachably secured thereto and also formed with aperipheral flange on one mar# gin laterally Vspaced from 'the felly,said flanges adapted to receive a tire between them, and means forsecuring a tire to said flanges.

3. The combination with a wheel having a felly, of a rimfvformed in twomembers, one memberV of the rim extending across and fixed to andprojecting laterally from oppasitek sidesof the felly and having aperipheral flange integral with one margin and laterally spaced from thefelly, thev other member of the rimv overlapping on the in# ner surfaceofthe first Vmember andV detachably secured thereto,A the second memberof the rim also being formed with a peripheral flange integral with onemargin and laterally spaced from the felly, said flanges being adaptedto embrace a tire.

Signed at Des Moines, in the county of Polk and State of Iowa, this 16thday of March, 1920.

`GEORGE W. OKEY.

